CC2480_11 Datasheet, PDF (38/48 Pages) Texas Instruments – Z-Accel 2.4 GHz ZigBee Processor

12.1 Recommended PCB layout for package (QLP 48)
CC2480
Figure 17: Recommended PCB layout for QLP 48 package
Note: The figure is an illustration only and not to scale. There are nine 14 mil diameter via holes
distributed symmetrically in the ground pad under the package. See also the CC2480 EM reference
design
12.2 Package thermal properties
Table 22: Thermal properties of QLP 48 package
Thermal resistance
Air velocity [m/s] 0
Rth,j-a [K/W]
25.6
12.3 Soldering information
The recommendations for lead-free solder reflow in IPC/JEDEC J-STD-020C should be followed.
12.4 Tray specification
Tray Specification
Package Tray Width
QLP 48 135.9mm ± 0.25mm
Table 23: Tray specification
Tray Height
7.62mm ± 0.13mm
Tray Length
322.6mm ± 0.25mm
Units per Tray
260
12.5 Carrier tape and reel specification
Carrier tape and reel is in accordance with EIA Specification 481.
CC2480 Data Sheet SWRS074
Page 38 of 43